Recombination processes in CdTe quantum-dot-doped glasses

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APPLIED PHYSICS LETTERS, 85(15), 3256-3258. CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA: AMER INST PHYSICS (2004) .

AMER INST PHYSICS

Abstract

Electron-hole recombination in CdTe quantum dots was studied by photoluminescence and resonant femtosecond pump-probe measurements. A dependence of recombination times with pump pulse intensity was observed and we attribute this to the Auger recombination process. The overall kinetic processes that we observed are a fast decay from the initial excited state to surface trap states, the Auger recombination, the recombination of electrons from the surface states, and a longer time recombination which we attribute to electrons in the deep traps states. (C) 2004 American Institute Of Physics.



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